to sit in the posterior in the patellar surface
of the distal femur. Now let’s have a look
at the tibia. Here, we can see we have anterior
and the posterior surfaces of the tibia.
We can see we’ve got a medial malleolus here.
And on the posterior surface, we can still
see the medial malleolus forming the ankle joints.
And we have a fibular surface. This is the
surface that you would see if you were standing
where the fibula was. We’ll talk, first
of all, about the tibial plateau, the proximal
part of the tibia. The tibia is larger than
the fibula and it’s mostly involved with weight
bearing. The articulations occur superiorly
between the femoral condyles on the tibial plateau
which we can see here, and also, inferiorly
with the talus. Here, I mentioned previously
the medial malleolus. When the fibula is in
place, we have two malleoli, medial and lateral,
and they help to form the ankle joint.
Proximally, we can see we have medial and
lateral condyles of the tibia. Here we have
a lateral condyle, and here we have a medial
condyle. We can see this anteriorly, and we
can also see this posteriorly. Here’s the
medial condyle and here’s the lateral condyle.
They are separated by the intercondylar eminence,
this small little elevation of bone that sits
on top of the tibial plateau and overlies
flat surface. Lateral and medial intercondylar
tubercles. So here, we can see some lateral
and medial intercondylar tubercles forming
this intercondylar eminence. As we’ll see,
these are important. The shaft of the tibia
is triangular in cross-section. The anterior
border we find, we have the tibial tuberosity,
and then we have this rather sharp anterior
edge. The lateral, medial, and posterior surfaces
form this triangular shape in cross-section.
Here, we have the medial surface running down
towards the medial malleolus, and here, we
can see the lateral surface forming the sharp
anterior border. If we will have the fibular
view, then we can see we have this lateral
surface here. The anterior edge is here, the anterior
border. And then we can see the posterior
surface where we have the nutrient foramen
for the nutrient artery to pass into the tibia.
We can also see on this posterior surface,
we have the soleal line, and this is important
as it’s the site of origin for the soleus
muscle. We can see running along the shaft,
we have the line for the interosseous border,
and that is where the interosseous membrane
connects the fibula to the tibia. Distally,
we have the narrowing of the tibia before
we have this medial expansion, which is the
medial malleolus, and we have laterally, the
fibular notch. And that allows for articulation
with the fibula. In the fibular view, we
can see we have this depression here. This
fibular notch that has this, the fibula.